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Old 02-17-2006, 08:22 PM   #6
Joel5.0
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Join Date: Oct 2005
Location: Sabana Grande, Puerto Rico
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Default Re: Couple Problems..... Soft Code???

Quote:
Originally Posted by BowTie Eater 5 Liter

my problem is after 5000rpm the car doesnt like to work, it backfires and gets really stoopid... i just changed o2's, fuel filter, fuel pump relay(was getting a code for that). i get a "soft code" if i tromp on it through the first 3 gears(or more). the check light will come on and stay on until i let off, and i can not pull a code up for it. i was thinking the o2's were the problem, but now im leaning towards mass air sensor??? i havnt found a way yet to actually test to see if the meter itsself is screwed? does this sound like a condition of a bunk mass air meter?

another q, what should i have the fuel pressure set to running my combo(as ive just got the stock injectors for now) or should i leave it at 39psi?

thanks
That's the problem....anytime the CEL turns on, there should be a code registered in memory, not having a code means there's a problem with the EEC-IV...what kind of problem?.....anything from a bad EEC relay, wiring, VPWR supply, ground, fubar'ed PIP signal, bad TPS, bad alternator (bad rectifier causing electrical noise) or,.......fubar'ed ECM.

How did the voltage check on the MAF go? , did you get rid of code 56? LUK
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1986 Mustang GT w/T-Tops
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